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    U.S. reduces recommended vaccines for children


    미국 아동 예방접종 일정 변경 백신 4개 줄여 U.S. health officials have cut the number of vaccines recommended for American ...



    미국 아동 예방접종 일정 변경 백신 4개 줄여 U.S. health officials have cut the number of vaccines recommended for American ...

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